Sue Li

The content of this article is derived from notes and drafts of the Harry Potter books/films/games that were cut before being released. As such, the contents of the article may or may not be considered canonical.

Etymology

Lǐ, written 李, is one of the most common surnames in Chinese, and borrowings of it are common family names in Japan and Korea as well. It dates back to the Tang Dynasty, being the surname of the Tang rulers.
In Turkish the name means "water". As for "Sue", from Chinese 素 "plain", or else 肃 or 肅 which both mean "respectful". Sue could have been an English name her parents picked for her, instead; it means "graceful lily" in Hebrew.